Allied Machine and Engineering 151A-21.5 21.5mm 1 Series T-A Original Drill Inserts Super Cobalt - TiAlN Coated
151A 1 Series Inserts To Suit T-A Replaceable Insert Drilling SystemSuitable for good to rigid machining applications and drilling high alloy and exotic materials. Material hardness up to 350 BHN 121kgFeatures Diameter Range 17.53 to 24.38mm Grade: HSS Super Cobalt TiAlN Coated for wear resistance over high surface speeds,excellent oxidation resistance Maximum working temperature 800CNOTE - 1.5 series inserts fit into both 1 and 1.5 series holders. However, 1 series inserts ONLY fit into 1 series holder